This is a story I've been planning for a week and I finally got it. The cover art was made by  hypr from a trade we did some time ago. Thank you again for making this for me and hopefully you enjoy the story if you ever get to read it.

Here's the link to the original pic: https://www.furaffinity.net/view/48666073/

Rocket Raccoon belongs to Marvel
Mystery belongs to MysteryBen27

Rocket and Mystery were exploring a strange cave when they find themselves a hidden wall that needed to be activated by a pressure plate. The raccoon knows exactly what to do and Mystery is going to be a big help.
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With every adventure comes an experience that comes an explorer’s way, or shall we say a bounty hunter and a magical kitsune who have really no experience besides finding any valuable items. Rocket Raccoon, a furry raccoon who’s an expert on hunting criminals and Mystery, a furry six foot magical feral kitsune, were ones to find something worth their time in a strange cave the two had discovered minutes ago. These two had met each other at a bar when Rocket was trying to get a drink and stumbled upon a dog who was trying to hunt some demons down. Apparently Rocket had thought about eating the dog in the alleyway, but that was before that dog transformed himself into a giant kitsune, now with the tables turned around. They talked things out and agreed to try to do something together to help lower their feud and mistakes. For why they were in the woods in the first place was either because Mystery sensed a demon or Rocket was hungry to vore a rabbit like a wolf. It’s possible it could have been Rocket’s reason. So with the two furry duo exploring the dark and damp cave, it’s no wonder what made it a bit scary for Rocket. “Geez, do caves look like hell?” The raccoon shivers but would soon find out that bringing his gun with him would be useful to him in case they’re not alone.

Mystery sways his tails side to side, rolling his eyes at the small raccoon. “If you hate it here, then I can just store you into my gut until we’re done.” A small smirk comes out of the kitsune’s mouth.

Rocket growls at Mystery with anger. “No way! I’m not letting you get the chance to eat me! Besides, I know ways to get myself out of predators’ bellies.” He’s prepared for the worst that could stow upon him if Mystery ever gets the chance. The two step around carefully around the cave with stalagmites above their heads. Mystery hates these kinds of stalagmites, even with the incident he had to deal with years ago. “I swear this is just a waste of time.” Rocket complains, stopping and looking back at Mystery. “Why not just go back?”

The kitsune stops as well, looking down at Rocket. “Go ahead, leave. Just don’t complain when I find some goodies in here.” He teases the raccoon as he knows that Rocket would do anything for some artifacts or money.

This makes Rocket groan, surrendering his fight and unwillingly continues his walk with Mystery. “You really know how to persuade me, don’t you?” The raccoon hates it but at least it gets him moving again. Just moments later, they felt like they were getting closer to something huge. This could change their lives either in a good or a bad way. Just up ahead, they find themselves at what looks to be a dead end. A huge wall blocks in their way with some ancient markings on it. At least this cave has some sort of secret but with no way to figure out what it is. “Ugh, this was a waste of time.” Rocket groans, now regretting that he didn’t just leave.

While Rocket complains, Mystery believes that there is something more to this than it meets the eye. He sniffs around on the ground, trying to pick up a trail that leads him right to the engraved wall. He can sense something on the other side, like this wall isn’t as it seems. “Hey, it’s not over yet.” He tells Rocket, getting him to stay for a bit longer. Once his nose is against the wall, Mystery gets a good idea about what’s going on. “There’s something on the other side of this wall.” He sits on the ground and presses his front paws on the wall, pushing it to see how sturdy it is. The wall doesn’t nudge and Mystery realizes that he needs to find a way to get it open. “We need to find a way to open this.”

“What?” Rocket wasn’t sure if Mystery was tricking him or if he was being serious. “No way that wall can open.” He’s never been one to go to ancient temples, unless it was for money and never had he heard of moving walls, unless he was talking about doors. The raccoon rolls his eyes but helps out Mystery by looking at the wall as well.

“Maybe a hidden switch or a button.” Mystery knows well of this due to him watching adventure movies with his owner. So the two animals look around the place, looking at the walls, floor and ceiling. They move any rocks, press on the rocky walls to see if anything retracts back.

Soon Rocket steps on something that didn’t feel right to him. It was too flat to even feel like he’s in a cave. He looks down at the ground, around to find himself standing on a giant platform. “Hey fox, I think I found something.” He steps off of it as Mystery walks over towards him. The two were utterly puzzled before Mystery placed his paw on it, now pressing down on it. The strange platform seems to move down just a bit, like it needs a heavier weight to push it down more.

That’s when Mystery realizes what it is. “It’s a pressure plate. We need something very heavy to weigh it down.” He wonders if this will help open the door. So he looks around the cave again, finding anything that could weigh a couple of tons, like a giant boulder. Though they couldn’t find a single one, not that they would have noticed one when they got here. With a defeated sigh, Mystery feels like there isn’t a way to push down the heavy pressure plate. “Dang, nothing we can use.”

Rocket would be happy that they have the chance to leave this cave, but something in his brain tells him that he should keep going with this, even though he did want to get out. He feels like there is something behind that hidden wall and he’ll do anything to get through it. Luckily, Rocket just remembered something that he worked on just weeks ago that he had crafted and tested. He goes through his pocket and pulls out a small blue gel-like pill. “We can try this.” Mystery wasn’t sure what that was or what it was about. He’s a bit nervous about it.

“What is that?” Mystery asks, needing some sort of explanation to that pill.

“This is called my water expanding pill. When a person swallows this down into their stomach, well the name says it all but let’s say that it’s more than just a small water bloat in their belly.” He said with a small chuckle.

It’s both worrying and interesting for Mystery. He’s never heard something like this unless it was from his owner’s spellbook or potions. “Ummmm, I hope you’re not thinking….” He’s been in these situations before but he can’t trust someone he just met last night.

Rocket shows off that smile on his face, a face that shows that he’s ready to do what he’s about to do. “Yep, one of us has to be an inflating water bag on top of that pressure plate. More likely, you’re gonna be doing it.” Now this scares Mystery.

“What? Why me!?” He asks, defending himself.

“Because you’re bigger than me in size, plus I’ve never gotten around to actually use it on another person rather than myself.” He still keeps the pill in his paw. Once he saw Mystery’s eyes looking down to his right side, he shouts, “Don’t you dare think about going back to that mutt form! I don’t know if I’ll be heavy enough to press that pressure plate down in full size!” Unfortunately with this pill, there is a limit to where the pill stops producing water inside and leaves them both immobile and huge. So there’s a possibility that Rocket cannot be able to do the pressure plate since he’s about four inches tall while Mystery sits at eight to nine.

The kitsune whines softly. The only thing that he worries about is if he might burst or not. Sure he’s been in those situations where he felt like he’s about to, but at least Vivi, who he trusts completely, was there to help. With Rocket, Mystery may never know if the raccoon may betray him. “I don’t know. Are you sure there isn’t another way to do it?” He still hopes that there can still be a giant boulder around here somewhere that he can use.

Rocket scoffs at Mystery’s avoidance to not take the pill. “Alright kitsune, let me tell you something. There is nothing here that weighs enough to push that plate down. So either we do this or we never find out what’s in that secret room.” Rocket gives him a choice.

Now with the tables turned, Mystery wishes that he hadn’t given Rocket a chance to stay with him. He sighs and groans, knowing these will never turn out good for him. “Fine, I’ll do it.” Shamely, he walks over to the pressure plate, getting on top of it fully. Like how he pressed his paw on it, his body seems to lower the plate just a little bit. So who knows how much weight he’ll need after he takes that pill. He sits on the platform and waits for Rocket to give him the pill.

The small raccoon steps up on the pressure plate, right in front and close up to Mystery’s furry chest. “Now lower your neck and open wide.” Mystery does as he tells him and once he gets as close as he could to Rocket, he opens his maw and Rocket tosses the pill inside. At first, Mystery thought of letting it in, but could the water form up inside his mouth and spill out? In fear, he swallows it as he should and Rocket steps back. “Perfect, it shouldn’t take long.” And so they wait, but not for long like Rocket had said earlier. Mystery can feel his stomach more bloated than that time he chugged tons of soda bottles. He places a tail on his belly, rubbing it while he can feel it expanding at a fast pace. He groans and whines, looking down at himself to watch his belly swell up further, now the size of a small pot belly. Rocket smiles and just stares at the bloating kitsune. “You know, my girlfriend Lylla wanted me to take that pill when I leave this planet. She was in the mood for a water bed.” He had some kinky stuff going on if they hadn’t found this secret.

It just makes Mystery more worried that he’ll become a giant water bed in the paws of a mercenary space raccoon. “Mrf! I feel fat.” The kitsune complains. The more weight he’s putting on by his water inflation, the pressure plate pushes down slowly. Soon, his gut was nothing more than a yoga ball with his front paws laying right on top of it since he couldn't reach the floor with them. When he moves it, it sloshes around like how an actual water balloon does. “Oh gods, so……bloated!” He lets out small wheezes and huffs, with that water now moving onto the rest of his body. It starts off on his sides, spilling outwards and drooping downwards. Then his ass bwomps and bloats up with two thick cheeks, increasing in size and rounding out like his belly. Soon, his entire torso rounds and spheres like a giant ball. “R-rocket! I’m getting rounder! I thought it was my belly that was inflating!”

“Well…..I guess I should have told you about that before.” Rocket doesn’t care about what other parts would swell up, just as long as Mystery’s gaining more water weight. His four legs, starting from his thighs, swells up all the way down to his paws. How they inflate and bloat into the shapes of giant sausages, stiffing up and immobilized. With his belly growing larger than ever, it forces Mystery to lift his legs upwards and apart from each other, as if he looked more human than feral. But with him growing bigger each second, the pressure plate below him pushes down even more, halfway. Rocket, who still stands there, is just amazed and in awe by his own creation. He stands up on a platform and places his paws on Mystery’s belly, rubbing and patting it as it jiggles like jello. “Oh Mystery, look how inflated you are. You’re blowing up!.” He teases, embarrassing the kitsune.

“By the gods, I’m huge!” As if he didn’t know that from the start.

“Heh, you sure are a water balloon.” Rocket replies, looking right at his swollen belly.

The water moves upward to his neck, expanding and stretching out his collar that his owner had given him. How it tightens around his neck while the leather creaks and tears slowly before popping off. “G-gah! My collar!” It jumps from his swollen neck and onto the ground with a clang. “Vivi is going to be angry at me.” That will be the least of his problems. His belly starts to hurt, with stretch marks and a red glow from the front. “Ah, it’s hurting!” He cries out with a couple of whines. This is what he has been fearing from the start. Finally, as they both hear a click underneath them, the pressure plate has been pressed down all the way. The wall behind them shakes and moves to the side like a sliding door.

“It worked!” Rocket excitedly backs away from Mystery who finally stops swelling up, but still immobile to move. Inside the secret room were things that Rocket could never believe would exist. Treasure, jewels, gold, and golden weapons. “Now this is what I’m talking about.” He rushes his way over to the room, grabbing everything he can and putting it in his pockets. “Dang, there’s so many artifacts here!” He might need to get himself a bigger bag if he ever comes here. Once he gets everything he needs, he exits the secret room and looks back at Mystery. “Thank you for helping me out, water balloon. Now I’m rich.”

The kitsune couldn’t see what was in the room but rather could see what was in his pockets. “Heh….well….c-could you help me out so I can grab some?” He asks, hoping that he’ll get his half of the deal since he did more of the work. He jiggles and wobbles on the pushed-in pressure plate, with no chance to move his body around. He still wheezes and huffs from the water putting all of that weight on his insides.

Rocket, as someone who’s a professional trickster, decides to give him the plot twist of his own. “About that….I might need you to stay there for a couple of days. If you were to get off that button, you might close the door and lose the rest. Plus….it’s all mine!” With an evil laugh, he goes on all fours and leaves, his echoing laugh slowly gets quieter by him running to the exit.

Mystery, in shock, barks and growls in anger. “Get back here, rodent! I-I’m gonna pop!” He can still feel that taut pain around his stomach, with stretch marks that go all the way from his sides to the front of his belly. If he were to move, he would crush and flatten that traitor into a pancake. He should’ve been more careful when trusting someone who’s not from his world. And they say kitsunes are supposed to be the tricksters. Without any idea how he would get back to normal, he focuses more on making sure his body doesn’t burst like a fragile water balloon. He’ll get his revenge soon, once he hunts down that raccoon.